.app{
    width: 100%;
    height: 100vh;
    background-color: #e0e0e0;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
input {
    width: 180px;
    height: 56px;
    border: none;
    outline-style: none;
    font-size: 16px;
    color: #333333;
    padding: 0 28px;
    border-radius: 28px;
    background: #e0e0e0;
    box-shadow: 6px 6px 12px #b8b8b8, -6px -6px 12px #ffffff, inset 0 0 0 #b8b8b8, inset 0 0 0 #ffffff;
    transition: all .24s ease-in-out;
}
input:focus{
    box-shadow: 0 0 0 #b8b8b8, 0 0 0 #ffffff, inset 6px 6px 12px #b8b8b8, inset -6px -6px 12px #ffffff;
}
input::placeholder {
    color: rgba(0, 0, 0, 0.4);
    font-size: 16px;
    font-weight: 700;
    transition: all .24s ease-in-out;
}
input:focus::placeholder {
    color: rgba(0, 0, 0, 0.8);
}